'That 2004 team, which finished with a 9-7 record, has a unique distinction. The website Football Outsiders, which analyzes the NFL through use of advanced metrics, calls the 2004 Bills the best team of this century to miss the playoffs. The Bills had Football Outsiders' No. 1 defense and special teams that year, according to the website's DVOA (defense-adjusted value over average), which measures the success of each play based down and distance, then makes a comparison to the NFL average baseline adjusted for situation and opponent.'